docs(example): Verbose comments

Signed-off-by: rjshrjndrn <rjshrjndrn@gmail.com>

examples/packer/aws-ubuntu.pkr.hcl.tpl

@@ -1,42 +1,49 @@
 packer {
+  // Specify required plugins and their versions for this Packer configuration.
   required_plugins {
     amazon = {
-      version = ">= 0.0.2"
-      source  = "github.com/hashicorp/amazon"
+      version = ">= 0.0.2" // Minimum plugin version requirement.
+      source  = "github.com/hashicorp/amazon" // Plugin source location.
     }
   }
 }
 
-{{$version := .Values.version}}
+{{/* Initialize variables from Helm values for reuse. */}}
+{{- $version := .Values.version }}
 {{- $regions := .Values.regions }}
-{{- range $_, $region := .Values.regions}}
-source "amazon-ebs" "{{$region}}" {
-  ami_name      = "or-ubuntu-arm64"
-  instance_type = "t4g.xlarge"
-  region        = "{{$region}}"
+
+{{/* Iterate over each region specified in Helm values. */}}
+{{- range $_, $region := $regions }}
+
+// Define an Amazon EBS (Elastic Block Store) source configuration for each region.
+source "amazon-ebs" "{{ $region }}" {
+  ami_name      = "or-ubuntu-arm64" // AMI name pattern.
+  instance_type = "t4g.xlarge" // Instance type to use.
+  region        = "{{ $region }}" // AWS region from Helm values.
   source_ami_filter {
     filters = {
-      name = "ubuntu/images/*ubuntu-jammy-22.04-arm64-server-*"
-      root-device-type    = "ebs"
-      virtualization-type = "hvm"
+      name = "ubuntu/images/*ubuntu-jammy-22.04-arm64-server-*" // Filter for Ubuntu AMI.
+      root-device-type    = "ebs" // EBS-backed AMI.
+      virtualization-type = "hvm" // Hardware Virtual Machine.
     }
-    most_recent = true
-    owners      = ["099720109477"] # Canonical
+    most_recent = true // Use the most recent AMI matching the filter.
+    owners      = ["099720109477"] // Canonical as the AMI owner.
   }
-  ssh_username = "ubuntu"
+  ssh_username = "ubuntu" // Default SSH username.
   tags = {
-    version = "{{$version}}"
-    createdBy = "packer"
+    version   = "{{ $version }}" // Inject version from Helm values.
+    createdBy = "packer" // Tag to identify the creator.
   }
 }
-{{- end}}
+
+{{- end }}
 
 build {
-  name = "or-ee-saas-ami"
+  name = "or-ee-saas-ami" // Build name for the resulting AMI.
   sources = [
-  {{- range $_, $value := $regions}}
+    // Inject source references for each region defined in Helm values.
+    {{- range $_, $value := $regions}}
     "source.amazon-ebs.{{$value}}",
-  {{- end}}
+    {{- end}}
   ]
 }
-